v1.2.0

• Makes chatterbox act as a library for iOS using an FFI layer (also see the chatterbox-ios repository for how that gets used by Swift)
• Sqlite is now used instead of files for more reliable storage transactions (particularly sessions)
• Further hardening of the OMEMO layer using new types to help catch bugs
• Reconnection is attempted when disconnection occurs
• XEP-0359 (Unique and Stable Stanza IDs)
• Typing indicators
• Reworked tests
• Pagination in the UI no longer sluggish when scrolling back too far
• Ctrl+S hides the sidepane
• System messages are displayed as a small pop up in the top right, instead of inline chat